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Subject[PATCH v4] checkpatch: allow long lines containing URL
From
Date
Allow lines with URL to exceed the 80 char limit for improved
interaction in adaption to ongoing but undocumented practice.

$ git grep -E '://\S{77}.*' -- '*.[ch]'

As per RFC3986 [1], the URL format allows for alphanum, +, - and .
characters in the scheme before the separator :// as long as it starts
with a letter (e.g. https, git, f.-+).

Recognition of URIs without more context information is prone to false
positives and thus currently left out of the heuristics.

$rawline is used in the check as comments are removed from $line.

[1] https://tools.ietf.org/html/rfc3986#section-3.1

Signed-off-by: Andreas Brauchli <andreas.brauchli@sensirion.com>
---
scripts/checkpatch.pl | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 95cda3ecc66b..8e4c4ee9811a 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2875,6 +2875,7 @@ sub process {
# logging functions like pr_info that end in a string
# lines with a single string
# #defines that are a single string
+# lines with an RFC3986 like URL
#
# There are 3 different line length message types:
# LONG_LINE_COMMENT a comment starts before but extends beyond $max_line_length
@@ -2906,6 +2907,10 @@ sub process {
$line =~ /^\+\s*(?:\w+)?\s*DEFINE_PER_CPU/) {
$msg_type = "";

+ # URL ($rawline is used in case the URL is in a comment)
+ } elsif ($rawline =~ /^\+.*\b[a-z][\w\.\+\-]*:\/\/\S+/i) {
+ $msg_type = "";
+
# Otherwise set the alternate message types

# a comment starts before $max_line_length
--
2.14.1
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